This part is a kind of semiconductor called LM393.

Function of this product has Low Offset Voltage Dual Comparators.

Manufacturers : ON Semiconductor

Image and pinout :

Some of the text within the PDF file :

LM393, LM393E, LM293, LM2903, LM2903E, LM2903V, NCV2903, NCV2903V Low Offset Voltage Dual Comparators The LM393 series are dual independent precision voltage comparators capable of single or split supply operation. These devices are designed to permit a common mode range−to−ground level with single supply operation. Input offset voltage specifications as low as 2.0 mV make this device an excellent selection for many applications in consumer, automotive, and industrial electronics. Features • Wide Single−Supply Range: 2.0 Vdc to 36 Vdc • Split−Supply Range: ±1.0 Vdc to ±18 Vdc • Very Low Current Drain Independent of Supply Voltage: 0.4 mA • Low Input Bias Current: 25 nA • Low Input Offset Current: 5.0 nA • Low Input Offset Voltage: 5.0 mV (max) LM293/393 • Input Co [ ... ]

LM393 PDF Datasheet Download